桥桩-土-隧道体系动力相互作用的振动台试验研究  

Shaking table test on the dynamic interaction of pile-soil-tunnel systems

作　　者：许洪春[1] 张亚楠 赵东旭 白晓晓 XU Hongchun;ZHANG Ya'nan;ZHAO Dongxu;BAI Xiaoxiao(College of Civil Architecture,Zhengzhou University of Aeronautics,Zhengzhou 450046,Henan,China;School of Civil Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China)

机构地区：[1]郑州航空工业管理学院土木建筑学院,河南郑州450046 [2]辽宁工程技术大学土木工程学院,辽宁阜新123000

出　　处：《地震工程学报》2024年第5期1063-1073,共11页China Earthquake Engineering Journal

基　　金：河南省高校青年骨干教师培养计划(2021GGJS116)。

摘　　要：为研究地震作用下桥桩-土-隧道体系的动力响应特性,依托某实际工程,设计出8个试验工况,选取3种不同地震波类型及地震强度,开展几何相似比为1/30的振动台模型试验,并从体系的固有频率和加速度响应等方面进行分析。通过对比分析各个工况,结果表明:桥桩的存在会削弱周围土体以及侧穿隧道的加速度响应,而隧道的存在则会放大场地土以及附近桥桩的加速度响应;不同类型的地震波对桥桩-土-隧道体系动力响应的影响不同。试验结论可为类似工程的抗震设计提供一定的理论指导。This paper aims to study the dynamic response characteristics of bridge pile-soil-tunnel systems under seismic action.Eight test conditions are designed based on actual projects,three different seismic wave types and intensities are then selected,and shaking table model tests with a geometric similarity ratio of 1/30 are conducted to analyze the system from the aspects of natural frequency and acceleration response.The results show that the presence of the bridge pile weakens the acceleration responses of surrounding soil and lateral tunnel,while the existence of the tunnel amplifies the acceleration responses of site soil and nearby bridge pile.Different types of seismic waves have various effects on the dynamic response of the pile-soil-tunnel system.The experimental results can provide theoretical guidance for the seismic design of similar projects.

关 键 词：桥桩-土-隧道体系 动力相互作用 振动台试验 加速度响应 

分 类 号：TU921[建筑科学—建筑设计及理论]